Telbmetric gas analyzer



' 1929- M. BOCK 1,732,396

' TELEMETRIC GAS ANALYZER Filed Nov. 19, 1926 lllllllllllllllllllllll u n IQ a; fv VenJ-ar a M WW M 7 i Patented Oct. 22, 1929 n I I UNITED STATES PATENT OFFICE mAxBooK, or HAMBURG, GERMANY rnnnnmmc GAS ANALYZER Application filed Noyember 19, 1926, Serial No. 149,496, and in Germany November 23, 1925.

My invention relates to remote recording Fig. 2 showing, also diagrammatically, a devices, and has for its object to provide immechanism with two recordmg bars, proved means for operating the indicating Fig. 3 being a section on the line 1IIIII and recording mechanisms of such devices. in F ig. 2.

5 To this end, instead of circular racks, that Referring now to Fig. 1, i is an electro- 5 is, ratchet wheels, I provide straight racks'inmagnet which for example may be energized tel-mediate the instrument to be recorded and by impulses from a gas hell or any moved the mechanisms. object in the wire 12-. la is the armature of the The indicating or recording mechanism is electromagnet, 7c is its pull-back spring, m

actuated periodically by impulses which are is a pawl on the armature, m is a rack adapted e controlled by the devic s to be recorded so to be displaced by the pawl 03', n and n are that their number isa function of the motion brackets in which the rack is guided, z is atenof the device to be recorded. By the impulses sion spring for the rack m, s is a stationary an electromagnet is energized the armature check which determines the initial position of of which operates a ratchet wheel and an inthe rack, g is a stylus at the outer end of the as dicator disc operatively connected with the rack, and I1 is a strip of paper on which the wheel. f record of the recorder is marked by the stylus.

It would be practicable to provide recordr is a releasing electromagnet, g is its arma- .J- ing means on the indicator disc but such an true, 79 is a rod secured to thearmature, m is a arran ement would be too awkward in View )ZLWl which holds the rack on in position, and 70 D 1 ot the largfle size of the fnfillcator d11sc anil and 791 are liiks connectitng {he rod p with moreover 1e accuracy-o 1e recor s wou e paw s a: an as respec 1ve y. be interitired with by the inertia of the disc The rack is dis-plizced for the pltch of one and its ratchet wheel. I tooth for each impulse by the armature 7c All these drawbacks are eliminated in my and its pawl w against the action of the 75 novel analyzer which as mentioned, is actuspring 2, and the motion of the rack is re- -ated similarly to theianalyzer referred to'but corded on the strip 'h. lVhen the-releasing in which the impulses which the devices to be magnet 1- is energized, both pawls m and a3 recorded controls, do not eflect the rotation are withdrawn from the teeth of the rack on of a ratchet wheel but the displacement of a and the sprin 2 returns the rack to its initial 80 t'lt 1F tl kthhd 't' a s raig 1 rac rom us me e an s or pos1 1on V styli of theindicator or recorder, as the case If de lr d the motlOn of the rack may be may b are t d di tl th th transferred to the stylus by a suitable system medium of a gear by which the motion of the of llllks levers an enlarged Scaleanalyzer from zero to maximum is changed Referrmg-now g 2 and 5 Show 85 into a motion intermediate the maxima. a p m Whlch 7 recording bars are Such a gear may comprise one or more parf d for example i h and recording bars which are operatively 9 the h i g' f connected wlth the rack by springs and will raCKmW 1c ay 6 ca ec aplilmmy mark continuous curves on a stri of a er moving f 'a and h 111911115 f r displacb p d .1311 g 1ng,arrest1ng and releasing it are constructed 1 i f e f a la W i Is exactly as described with reference to Fig. 1 amomxtlcg i i as t e and are therefore marked with the same refhlrlls to Its Hun-a1 P g l erence letters, but the rack is not directly spr ng of the bar to return it to its own 1n1t1al connected with the styhia a is a fork '9 posltloncured to the rack m, b and b are recording 1:; the driving, I ha e illustrated two reba t di tiahrough h eye f the fork,

cor m mec anisms o and 0 are tu es seated on the bars 5' I) Fig l showing diagrammatically a mechwithin the fork a, c and 0 0 and c are sniall 5 anism with a single recording bar, and' flanged tubes which are free to slide'on the shown.

and checks 3 y, and 1 3 on the bars. u

is a brake block for the bar b, and u is a brake block for the bar b springs '01, 'v' tending to hold the brake blocks engaged with their respective bars, and w, 'w are electro-' magnets which, when energized, withdraw the brake blocks so as to release the bars. 9', g are styli at the ends of the bars, and h 1s a strip on which the records are marked.

When the electromagnet i is energized the rack m is displaced as described with reference to Fig. 1, and the bars 6', b are placed under the tension of the springs d, d but not moved as they are retained by their brake blocks. Suppose that the magnet w is'energized the brake block a will release the bar I) and the spring at will move the bar to the rightin which position it is arrested when the magnet w is de-energized. The release magnet r is now energized and the rack m is allowed to return to its initial position while the bar 6 remains in the position it had assumed. For thenext displacementof the rack m, the brake block a will be released allowing the bar I) to move to the right in which position it is arrested by the brake block u which had previously released the bar under the action of its magnet w.

, When a test has been completed the two bars will remain in the positions which have been imparted to them and, at the next test, the bars will move from these positions only thru a distance corresponding to the values ascertained during this test, and so on so that continuous curves will be marked on the strip h 18' the st li g, g.

bvio

us y,.if lt-isdesired to test for ex ample onl the carbon monoxide or thecar-- bon dioxi e content of the gases, or any other single variable, only one bar will be required.

If desired, hands A and A. may be pro-- vided in connection with the bars I), b by which the test is indicated on scales, not

.I claim: 7 4 I 1. In 'a recording device, a primary movin member, elastlc means tending to hold said member in normal position, electromagnetically operated means for causing a step by step movement of .said member against ,the action of said elastic means, means for retaining said'member in any position to which it is moved, a plurality of recording members, elastic connections between said primary moving member and said recordmg members, braking means associated with said primary moving member to return to normal position.

2. In a recording device, a primar moving member, means for adjusting sai member from a normal position toa new position corresponding to an amount to be recorded, a plurality of recordin members, elastic connections between said primary moving member and said recording members, braking means associated with each recording member, means for independently releasing each braking means to permit the released recording member to assume a position cor responding with that of the primary moving member, and means for returning said primary moving member to normal position.

In testimony whereof, I have signed my name to this specification.

' MAX BOOK. 

